American wildlife & plants : a guide to wildlife food habits; the use of trees, shrubs, weeds, and herbs by birds and mammals of the United States - Martin, Alexander Campbell, 1897-; Nelson, Arnold L.; Zim, Herbert S. (New York : McGraw-Hill, 1951)
"Prepared under the direction of the United States Fish and Wildlife Service, Department of the Interior, at the Patuxent Research Refuge, Laurel, Maryland."
Keywords: Animals -- Food; Zoology -- United States; Botany -- United States